Martin Schreiber schrieb:
but I fear we can not use that information for development with Free Pascal
because:
"
The string is represented internally as a Unicode string encoded as UTF-16.
Characters in the Basic Multilingual Plane (BMP) take 2 bytes, and characters
not in the BMP require 4 bytes.
"
and
"
A control string is a sequence of one or more control characters, each of
which consists of the # symbol followed by an unsigned integer constant from
0 to 65,535 (decimal) or from $0 to $FFFF (hexadecimal) in UTF-16 encoding,
and denotes the character corresponding to a specified code value. Each
integer is represented internally by 2 bytes in the string. This is useful
for representing control characters and multibyte characters.
"
which seems to be different from Free Pascal.
Correction:
You're right, Delphi treats control characters as UTF-16 codes, where
FPC treats them as byte values (if less than 256).
I noticed the possible problem already, that the FPC interpretation of
control characters is context sensitive. This leads to write-only code,
because a change of the $codepage would require to change all control
characters in that unit accordingly. This in addition to the removal or
addition of control characters > 255, which also lead to a different
interpretation of the remaining control characters *and* to a different
internal representation.
DoDi
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